3 ms·

Curious : What are current best practices for large B2C apps like FB, regarding storage of prior values that are replaced by the user? Specifically in relation

Curious : What are current best practices for large B2C apps like FB, regarding storage of prior values that are replaced by the user? Specifically in relation to key account information (email / phone / 2FA ). Are prior entries effectively wiped... or stored ? And was such practice always in place, or when did it change?

throwawayboise 6y ago
I would presume that they keep all prior versions of the user profile, indefinitely.
- pbhjpbhj 6y ago
  Probably but that goes against GDPR which requires deletion when requested by a user.
  - zwaps 6y ago
    Facebook doesn’t care about GDPR or laws for that matter. It’s still profitable to do this and get slapped with some minor fine and some insincere apology. We have seen it now dozens of times.
willxinc 6y ago
For security purposes, likely all prior entries are kept on hand with the time, for some retention period, before being wiped.
cosmie 6y ago
> large B2C apps like FB FB is an advertising firm, and the identifiability of their audience is a major value driver of their ad inventory[1]. They explicitly leverage the PII stored on their consumer users to enable advertising offerings such as Custom Audiences[2][3][4] and Advanced Matching[5][6]. Best practice for any B2C app like FB would be to retain those prior values indefinitely, since prior values still provide valid utility for their advertising services as additional data points for matching. That likely differs from best practices for large B2C apps that aren't like Facebook and don't have similar incentives for indefinite data retention. [1] https://www.adexchanger.com/mobile/facebook-could-take-a-multibillion-revenue-hit-from-apples-idfa-changes/ https://www.adexchanger.com/mobile/facebook-could-take-a-mul... [2] https://www.facebook.com/business/help/341425252616329 https://www.facebook.com/business/help/341425252616329 [3] https://www.facebook.com/business/help/2082575038703844 https://www.facebook.com/business/help/2082575038703844 [4] https://www.facebook.com/business/help/2082575038703844 https://www.facebook.com/business/help/2082575038703844 [5] https://www.facebook.com/business/help/611774685654668 https://www.facebook.com/business/help/611774685654668 [6] https://www.facebook.com/business/help/2445860982357574 https://www.facebook.com/business/help/2445860982357574
- IG_Semmelweiss 6y ago
  thank you

throwawayboise 6y ago

I would presume that they keep all prior versions of the user profile, indefinitely.

pbhjpbhj 6y ago
Probably but that goes against GDPR which requires deletion when requested by a user.
- zwaps 6y ago
  Facebook doesn’t care about GDPR or laws for that matter. It’s still profitable to do this and get slapped with some minor fine and some insincere apology. We have seen it now dozens of times.

willxinc 6y ago

For security purposes, likely all prior entries are kept on hand with the time, for some retention period, before being wiped.

cosmie 6y ago

> large B2C apps like FB FB is an advertising firm, and the identifiability of their audience is a major value driver of their ad inventory[1]. They explicitly leverage the PII stored on their consumer users to enable advertising offerings such as Custom Audiences[2][3][4] and Advanced Matching[5][6]. Best practice for any B2C app like FB would be to retain those prior values indefinitely, since prior values still provide valid utility for their advertising services as additional data points for matching. That likely differs from best practices for large B2C apps that aren't like Facebook and don't have similar incentives for indefinite data retention. [1] https://www.adexchanger.com/mobile/facebook-could-take-a-multibillion-revenue-hit-from-apples-idfa-changes/ https://www.adexchanger.com/mobile/facebook-could-take-a-mul... [2] https://www.facebook.com/business/help/341425252616329 https://www.facebook.com/business/help/341425252616329 [3] https://www.facebook.com/business/help/2082575038703844 https://www.facebook.com/business/help/2082575038703844 [4] https://www.facebook.com/business/help/2082575038703844 https://www.facebook.com/business/help/2082575038703844 [5] https://www.facebook.com/business/help/611774685654668 https://www.facebook.com/business/help/611774685654668 [6] https://www.facebook.com/business/help/2445860982357574 https://www.facebook.com/business/help/2445860982357574

IG_Semmelweiss 6y ago
thank you